error: invalid operands to binary expression

I'm seeing this error when including the files:
```
include/implot/implot.cpp:279:84: error: invalid operands to binary expression ('ImVec4' and 'ImVec4')
279 | case ImPlotCol_AxisGrid: return GetStyleColorVec4(ImPlotCol_AxisText) * ImVec4(1,1,1,0.25f);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~
include/implot/implot.cpp:370:66: error: invalid operands to binary expression ('ImVec2' and 'const float')
370 | DrawList->PrimQuadUV(pos + ImVec2(glyph->Y0, -glyph->X0) * scale, pos + ImVec2(glyph->Y0, -glyph->X1) * scale,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~
include/implot/implot.cpp:370:111: error: invalid operands to binary expression ('ImVec2' and 'const float')
370 | DrawList->PrimQuadUV(pos + ImVec2(glyph->Y0, -glyph->X0) * scale, pos + ImVec2(glyph->Y0, -glyph->X1) * scale,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~
include/implot/implot.cpp:371:66: error: invalid operands to binary expression ('ImVec2' and 'const float')
371 | pos + ImVec2(glyph->Y1, -glyph->X1) * scale, pos + ImVec2(glyph->Y1, -glyph->X0) * scale,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~
include/implot/implot.cpp:371:111: error: invalid operands to binary expression ('ImVec2' and 'const float')
371 | pos + ImVec2(glyph->Y1, -glyph->X1) * scale, pos + ImVec2(glyph->Y1, -glyph->X0) * scale,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~
include/implot/implot.cpp:594:42: error: invalid operands to binary expression ('const ImVec2' and 'const ImVec2')
594 | ImRect outer_rect_pad(outer_rect.Min + pad, outer_rect.Max - pad);
```

Here's a simple version of the kind of file that would file:
```
#include "sokol_gfx.h"
#include "sokol_app.h"
#include "imgui/imgui.h"
#include "util/sokol_imgui.h"
#include "implot/implot.h"
#include "implot/implot_internal.h"
#include "implot/implot.cpp"
#include "implot/implot_items.cpp"
```

Here's my build file:
```
clang++ -I include -I include/sokol -I include/imgui lib/macos/implot.cpp -o implot
```

More details:
```
clang++ --version
Homebrew clang version 19.1.7
Target: arm64-apple-darwin23.6.0
Thread model: posix
InstalledDir: /opt/homebrew/Cellar/llvm/19.1.7/bin
Configuration file: /opt/homebrew/etc/clang/arm64-apple-darwin23.cfg
```

Any ideas what could be causing this? Thanks!